[Q] Cell reception indicator constantly flips between "no reception" display and bars
I'm using the Xperia Z3 Compact on TMobile's network in the US.
About 1/4 of the time when I turn on the display the phone indicates that it has no cell reception:
1) The phone shows no bars of reception, and a red X over the bars
2) The lock screen reads "Emergency calls only"
However, within a second or two the phone appears to acquire an excellent signal and I get a full 3-4 bar display. All of the areas in which I use the phone are marked as "Excellent" on TMobile's coverage maps.
This also happens intermittently while I'm using the phone. I'm not sure if it's actually losing the signal or if it's just a software issue. I've never had it drop a call or cut out while I'm talking.
I'm getting only acceptable battery life from the phone (about 25% at the end of the day) despite light usage and conservative app installation, even though this phone has a reputation for excellent battery life. My theory is that this might have to do with the phone constantly disconnecting from the network and then having to re-aquire a signal.
Anyone else had this experience with the Z3C?
Hey mate.. I posted the exact same issue a couple of months back. I was experiencing this exact same issue.
I've had my LTE disabled for about a month now and haven't had a single drop.
Not sure if LTE is a dealbreaker but since my device is a business line, I can "suffer" with better battery life and slower internet if I'm not dropping calls. I've considered trying a ROM with updated radio firmware but figured I'd wait to see what the current Lollipop update does ('ll re-enable LTE once I install it and see if it repeats the same behavior) for my phone before trying a 3rd party system.
Hope this helps
sh0nuff said:
Hey mate.. I posted the exact same issue a couple of months back. I was experiencing this exact same issue.
I've had my LTE disabled for about a month now and haven't had a single drop.
Not sure if LTE is a dealbreaker but since my device is a business line, I can "suffer" with better battery life and slower internet if I'm not dropping calls. I've considered trying a ROM with updated radio firmware but figured I'd wait to see what the current Lollipop update does ('ll re-enable LTE once I install it and see if it repeats the same behavior) for my phone before trying a 3rd party system.
Hope this helps
Click to expand...
Click to collapse
Thanks! Really gratifying to know that it's not just my device. Seems like there's a strong possibility this is the issue since I'm on a MVNO that's only been on this LTE network a few months. I've flipped the device into GSM only mode and we'll see if it helps.
Dumb question how do i flip it into gsm?
qylie said:
Dumb question how do i flip it into gsm?
Click to expand...
Click to collapse
Settings>More>Mobile Networks>Preferred Connection type> GSM only
Sent from my D5803 using XDA Free mobile app
Thanks!!!
I'm having the same issue as you have described. For now I've set the phone to 3G prefered. Looks instantly better. Signal strength is also better.
Provider: Simyo (KPN network) - The Netherlands
Edit - Issue solved:
I switched from the Lollipop Baltic ROM to the Lollipop KPN carrier ROM for The Netherlands. The switching is gone for me. Battery life drastically went up.
Any update on this? I just started experiencing this issue out of no where about 2 weeks ago. I'm not rooted or anything, can't afford to due to job security requirements and such.
Hi Everyone,
Anyone having same problem w/ signal if its set to 4G/3G/GSM,? I never had issue with previous firmware but issue just started w/ 5.1.1, I tried downgrading and it works, and upgrade back to 5.1.1 and experiencing same issue, if i'll select "GSM only" I have high signal.
Any solution for this or changing baseband?
Thank you.
Shizuwi said:
Hi Everyone,
Anyone having same problem w/ signal if its set to 4G/3G/GSM,? I never had issue with previous firmware but issue just started w/ 5.1.1, I tried downgrading and it works, and upgrade back to 5.1.1 and experiencing same issue, if i'll select "GSM only" I have high signal.
Any solution for this or changing baseband?
Thank you.
Click to expand...
Click to collapse
I experienced the same problem on .546, here in Dallas AT&T has a strong LTE signal but my z3 only showed one bar consistently throughout the day. I found no way to remedy this other than downgrade back to 5.0.2.
Sony xperia z3c mobile data problem
Hi,
sorry for my bad english. After the latest aktualization 23.4.A.0.546 (Android 5.1.1) I have a problem with interrupted mobile data connection (3G, 2G), permanently connect, disconnect. 4G holds on (done up), but very bad signal, rather none. Device is factory reseted after the actualization, sim card is OK, operator (T-mobile CZ) doesn’t see any problem with configuration. Before the actualization no problem. Question posted on official technical support Sony a week without response. In my opinion - bugged actualization. Anyone any idea?
Sony xperia Z3 compact
T-mobile Czech republic operator
Issues
The 4g is really weak but I'm also having trouble with phone calls. The caller cannot always hear me. I have to switch back and forth between speaker and handset. As a result callers hang up on me but also because the signal is weak my calls drop. Another issue I have is when I logonto WiFi all running apps fail to operate data specific features. For example if I long g into WiFi my whatsapp will stop sending and receiving messages and if I go back up cellular those messages will sometimes leave the queue but generally I have to restart my phone.
Body lock feature on smart lock does not work, first day out out caused me a huge problem with a girl I was seeing. I should add that these issues are also being experience by my friend, we both have the z3c USA version.
yeah I am having issues as well where it drops out and gets weak. I have another 4g phone on the same network and that isnt having the issues.
edit: using 23.4.A.0.546 - Unbranded - BALTIC (1288-5413) on a UK z3c
I have no problems with signal strength. In the place of my tests I have always 100% coverage.
But I have observed very slow change 3g / 2g to lte (preferred) / 3g / 2g. The delay was 2 to 3 minutes to switch from 3G to LTE. I have done many many tests.
Maybe finally I managed to solve: I have opened mobile mode info with * # * # 4636 # * # * and I changed mode LTE / WCDMA. Now the connection to LTE is faster, 15 to 20 seconds.
Maybe you can try the mobile mode info.
I continue to report more tests.
I using NCB 1288-5411 23.4.A.0.546_R14C (Nordic Combined) customized Slim Wajk . In Spain.
Lte only
That works for me but now I cannot make calls because voice is handled in the 3g network. Ideas?
---------- Post added at 12:57 PM ---------- Previous post was at 12:50 PM ----------
Lte/GSM(auto prl) works for me and resolves the data issues
I switched to the UK o2 version (my carrier) and things seem to be back to normal and I now have the NFC icon in the notifcation panel, something absent on the version I had installed before.
very odd. but I like the o2 version as it allows me to chose just 4g/3g/2g etc for when I am in areas of bad signal, not something the other versions give you as much control over.
Blah
Still the same issues. Hopefully Sony can patch this.
Azazelix said:
Hi,
sorry for my bad english. After the latest aktualization 23.4.A.0.546 (Android 5.1.1) I have a problem with interrupted mobile data connection (3G, 2G), permanently connect, disconnect. 4G holds on (done up), but very bad signal, rather none. Device is factory reseted after the actualization, sim card is OK, operator (T-mobile CZ) doesn’t see any problem with configuration. Before the actualization no problem. Question posted on official technical support Sony a week without response. In my opinion - bugged actualization. Anyone any idea?
Sony xperia Z3 compact
T-mobile Czech republic operator
Click to expand...
Click to collapse
Hi Azazelix,
I'm also in TMCZ network and I used to have data connection problems (losing data connection when travelling) with others than T-Mobile CZ branded fw.
Since I'm on branded TMCZ LP fw, all problems are gone.
I'm guessing it might have something to do with radio version -> now I have 8974-AAAAANAZQ-00063-42 and no problems.
As far as I know TMCZ branded 5.1 is not released yet! -> thus my suggestion for going back to latest TMCZ branded fw and hold on until TMCZ branded 5.1
is gonna get released.
Good luck to you!
The Sony support forums suggested that you changed your app settings. In your app settings where it says ipv6, change it to ipv4. This seems to have worked for me however I'm still having issues with people hearing me when I use speaker phone.
No news? Im brazillian. The same problem with 5.1.1
Unique solution is back to 5.0.2?
Losing GSM signal very often
Hello everyone,
Since I updated my phone to B815 version I have noticed that my P7 recently very often loses gsm network (like no sim card is inserted), once a day. First I thought maybe sim card doesn't fit well and get the new one from the operator. But still the same issue.
In that case, first I enter airplane mode and then turn the airplane mode off. But it is very annoying. Does anyone else have the same issue? Any solution? My P7 is one year old and never had this issues until last month.
Also, when the display is turned off, the phone went into "sleep" mode which result that I do not receive viber messages instantly but only when I enter viber application. That is the issue from the beginning, no matter on software version installed.
Thanks for reply.
Just wondering if anyone has noticed this issue. I'm running a Samsung S6 Active (Cricket, but I've also just AT&T).
By default my phone starts with the preferred network as LTE/UMTS auto and I'm unable to get any sort of connection. The only thing my phone will connect with is when I have it set on 'WCDMA Preferred' or 'WCDMA Only'. Any other setting causes my phone to heat up and have battery drain.
When I'm traveling in other areas of the state the phone seems to have no issue connecting via LTE/UMTS. I suspect that the issues is the 'Partner Towers' that my phone is using near my home and work.
Does this make sense? Any ideas why the phone would have issues switching automatically? My wife seems to have no issue with her iPhone. The thing that frustrates me the most is that I routinely lose a connection even when set on WCDMA Preferred (and that I have to specify each time I reboot my phone).
Currently Running 7.0, but seem to have this issue regardless of version.
I'd appreciate any thoughts or suggestions.
idledragon said:
Just wondering if anyone has noticed this issue. I'm running a Samsung S6 Active (Cricket, but I've also just AT&T).
By default my phone starts with the preferred network as LTE/UMTS auto and I'm unable to get any sort of connection. The only thing my phone will connect with is when I have it set on 'WCDMA Preferred' or 'WCDMA Only'. Any other setting causes my phone to heat up and have battery drain.
When I'm traveling in other areas of the state the phone seems to have no issue connecting via LTE/UMTS. I suspect that the issues is the 'Partner Towers' that my phone is using near my home and work.
Does this make sense? Any ideas why the phone would have issues switching automatically? My wife seems to have no issue with her iPhone. The thing that frustrates me the most is that I routinely lose a connection even when set on WCDMA Preferred (and that I have to specify each time I reboot my phone).
Currently Running 7.0, but seem to have this issue regardless of version.
I'd appreciate any thoughts or suggestions.
Click to expand...
Click to collapse
Did the phone ever connect properly, especially before the 7.0 Nougat update? I can get a connection, but the phone keeps flipping between band 30 with a weak signal and bands 2,4 or 17 that have good signals. I updated my S6 Edge to Nougat around the same time and it too is doing the same thing. Other phones I have are fine. It's probably not your phone. I think one of AT&Ts updates caused the problem.
Sent from my SAMSUNG-SM-G890A using Tapatalk
I actually had the same problem before the update (I was hoping the update would fix things). Cricket basically has said they won't support my Unlocked AT&T phone because it is an unlocked phone.
The really strange this is there are areas in town where I can connect just fine (not at my house or work). Any when I'm travelling to other areas of the state (Montana) I don't have this issue.
Update - I tried everything I could think of (even swapped our Sim a couple of times). Signal would randomly drop and phone calls would often be lost after a couple of minutes.
Long story short-I picked up a Moto G4 and it isn't having any of the same issues. Most importantly I reliably receive phone calls when my 8 year old needs to contact me.
Hey all - I've got a stock g6 on Verizon that seems to lose internet intermittently despite still showing LTE signal; whatever I'm doing that requires the internet will hang for maybe a minute or two. If I toggle airplane mode on and off everything works again.
Possibly related: a few times a day the phone will completely lose service, even when I'm stationary in an area with good coverage. GF's G5 plus, also Verizon, maintains strong LTE throughout.
Is this a radio issue? I keep checking to see if the 9.0 OTA is out in hopes it will fix the problem. I'd be very grateful for any recommendations!
Thanks all.